Steam-boiler.



No. 775,096. PATENTED NOV. 15, 1904. E. H. TAYLOR.

STEAM BOILER.

APPLICATION FILED FEB.17, 1900.

N0 MODEL. 4 SHEETS-SHEET 1.

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E. H. TAYLOR.

STEAM BOILER.

APPLICATION FILED FEB. 17', 1900.

4 SHEETS-SHEET 2.

NO MODEL.

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No. 775,096. PATENTED NOV. 15, 1904.

E. H. TA

STEAM B APPLICATION mm: .17, 1900.

NO MGDEL. 4 SHEETS-SHEET 3.

I- III M. I]! H- II I l- HI PATENTED NOV. 15, 1904.

E. H. TAYLOR.

STEAM BOILER.

APPLICATION FILED FEB.17, 1900.

4 SHEETS-SHEET 4 NO MODEL.

Inventar 2172a Z, fa /11* wink-Attorney? WMWHFMM a? b GJZ Y Canada/ W UNITED STATES Patented November 15, 1.904.

PATENT OEEIcE.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent N0. 775,096, dated November 15, 1904.

Application filed February 17, 1900- Serial No. 5,562. (No model.)

To aZZ whom, it may concern:

Be it known that I, EUGENE H. TAYLOR, a citizen of the United States, residing at Lynn, in the county of Essex, State of Massachusetts, have invented a certain new and useful Improvement in Steam-Boilers, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention has for its object to provide a compact and efficient boiler by means of which steam may be Very quickly made and which shall reduce the danger from explosion to a minimum.

The invention is fully set forth in the following description, in which reference is made to the accompanying drawings, and the novel features thereof are pointed out and clearly defined in the claims at the close of this specification.

Having reference to the drawings, Figure 1 is an end elevation, the casing and one of the tubes being shown in section for greater clearness. Fig. 2 is a side elevation, partly broken away. Fig. 3 is a plan view with the top of the casing, as also the dome, the feedpipes, and steam-outlet pipes removed. Fig. 4 is a side elevation, partly in section, of one section of my boiler. Fig. 5 is a section and top View looking down from the line 5 5 of Fig. 4. Fig. 6 is an end elevation of the section of the boiler shown in Fig. 4.

The boiler is suitably supported in any well-known manner within a casing or shell 1, in the lower portion of which at 2 the heater or furnace (not shown) is located and at the top of which at 3 is located the uptake, by means of which the unconsumed gases and other products of combustion escape. The casing 1 is preferably formed of sheet-iron lined, as shown, with a layer of asbestos or the like non-conducting material. The furnace or heater, which is located below the boiler in the space designated 2, may be of any well-known construction. My boiler is,

however, more particularly designed for use in conjunction With a heater employing oil, gasolene, or the like as fuel.

The boiler comprises a series of sections, each section in turn comprising a series of One of these tube-sections, compristubes.

ing six tubes, is shown detached in Fig. 4, the six tubes being disposed three on each side of the central chambers l and 5. In constructing a boiler embodying my invention the number of sections employed may be varied in accordance with the size of boiler required. In the plan View shown in Fig. 3 eleven sections are employed in forming the boiler there shown. These sections are placed side by side, so that the upper chamber or receptacle 4 and the lower chamber or receptacle 5 of each section is in registration with the corresponding chambers of the adjoining sections, as will be clear from Fig. 2, and the series of sections are secured iirmly together by means of horizontal rods 6, (see Fig. 2,) which pass from side to side thereof and which are provided with screw-nuts 7, the said rods thus serving to clamp the said sections securely together. hen thus secured together, it will be seen that the upper chambers 4 and lower chambers 5 form a continuous upper chamber and a continuous lower chamber extending from side to side of the boiler. The sections referred to are preferably exact duplicates. The horizontallyextending portions of each head project from the opposite sides of such head at different heights, as shown in Figs. 4 and 5. (Jonsequently the series of tubes on one side of the central chambers l and 5 of each section are set lower than the correspondingtubes on the other side of the said chambers, as will be clear from Fig. 4, and when the series of sections are placed together, as shown in Fig. 2, alternate sections on each side have their tubes on that side located relatively lower than are the tubes of the sections with which they alternate, thus increasing the space between the sections through which the heated gases and products of combustion pass.

The upper and lower heads 11 and 12, respectively, are each preferably cast-iron and are integral. These portions are united by means of a series of tubes, as will be clear from the left-hand portion of Fig. 4E. The said tubes are arranged in pairs, each pair comprising an inner tube 8 and an outer tube 9. The inner tube serves simply as a flue and is secured, by means of a thimble 10 at one or both ends, to the heads 11 and 12. The inner tube thus passes through the heads 11 and 12, as shown. The outer tube 9 is flanged at each end within the openings formed to receive it in the heads 11 and 12 and serves as a means of connecting the spaces or chambers within the heads, thus permitting a circulation of water or steam. The space between the tubes 8 and 9, as will be clear, is filled with water or steam, while the inner surfaces of the inner tube 8 and the outer surfaces of the outer tube 9 are subjected to the action of the heat. The number of pairs of tubes used in a section may be varied, the number being increased or diminished in accordance with the boiler capacity desired.

The chambers 4 and 5 of a section are conneoted together by means of a tube 45, Fig. 4, through which communication between the said chambers is established. The said tube, furthermore, serves as a reservoir, affording a material increase in the water capacity of the boiler and in the evaporatingsurface thereof. These facts, as Well asthe fact that the said tube offers an opportunity for free and rapid circulation of the contents of the boiler unit, result in a boiler of an increased steaming power, due to the increase in its eva porating-surface and more perfect internal circulation, while the larger water-carrying capacity of the same insures a greater steadiness and regularity in the rate of steam generation.

The thimble 10 is interiorly threaded, so that it may be screwed onto the end of the inner tube 8. By screwing the thimble onto the tube the flange of the thimble is forced tightly against the portion of the head which underlies the flange of the thimble, and a tight joint may thus be formed. When for any reason it is desired to remove one of the tubes 8, the thimble at one end may be unscrewed and removed and the tube withdrawn through the head at the opposite end, or if a thimble is employed at each end of the tube both thimbles may be removed. In this way provision is made for the ready removal and replacement of the flue-tubes when desired.

One end of each of the inner tubes may be secured to the heads 11 or 12 in the manner indicated at 13, Fig. 4-that is to say, instead of employing a thimble, as 10, the said ends are enlarged somewhat and are inserted in the openings formed to receive them in the head and then upset or flanged. As these inner tubes may require to be removed to be cleaned or repaired, it is desirable that they should be so secured that this may be readily done. 7

To this end the method of securing them by thimble at one or both ends, which I have shown and which is above described, has been devised. 1

The boiler is filled with water to a point above the tops of the inner tubes, the water filling the space between the inner and outer tubes, the hollow spaces inside the lower head 12, which opens into the space between each pair of tubes, the chamber 5, the tube 45, and the lower part of the chamber 4. The relative proportion of the area of heating-surface in the case of the respective tubes 9 and their flues 8 with respect to the quantity of water contained in the space between a given tube and its flue is such that a rapid heating of the water occurs, accompanied by an upward tendency of the water within the said space. The corresponding proportion between the heating-surface of a tube 45 and the quantity of water contained within such tube is such as to permit a downward movement of the water within said tube. It therefore results that the circulation in each section of the boiler is upwardly within the tubes 9 9, thence through the upper hollow head to the central or intermediate chamber 4, thence downwardly through tube 45 into the lower central or intermediate chamber 5, and thence through the lower hollow head to the tubes 9 9 again. The downward movement of the water within the tubes 45 45 is free and unobstructed, and it will be perceived that a rapid circulation is provided for. The steam which is formed passes upwardly and into the upper central chamber 4. At the respective ends of this chamber connecting-pipes 14 and 15 are provided, through which the steam passes to the dome 16. From this dome 16 it passes, by means'of the pipe 17, which is preferably laid in convolutions above the sections which comprise the boiler proper, to the engine. The location of the pipe l7 will be clear from Fig. 1, the open end thereof which is nearest the engine being shown at 18 in said figure. The feed-water pipe 19 is also preferably laid in convolutions above the steam-outlet pipe 17 and on each side of the dome 16 and is thence carried downwardly as shown, Fig. 2 at 20, and enters one end of the lower chamber 5. A water-gage 21 is shown, Fig. 2, outside the casing 1, the lower end 22 of the gage connection entering the lower manifold or chamber 5, and the upper end 23 thereof entering the connection which leads from the upper chamber or manifold 4 to the steam outlet or dome 16.

A boiler constructed as shown and hereinabove described is especially adapted for use as a portable boiler in the propulsion of roadvehicles or the like. It is comparatively simple and economical in construction, will form steam rapidly, While the dangers resulting from explosion are reduced to a minimum. An undue increase of pressure would result in a rupture of one of the outer tubes 9, within which a relatively small quantity of Water or steam is contained, and the danger resulting from such a rupture would be comparatively slight.

What I claim is 1. The combination with the combustionchamber of a furnace, of a sectional boiler comprising a plurality of units or members, each of the latter consisting of the upper and lower chambers 4 and 5 and hollow heads extending laterally from said chambers, tubes 9 connected with the said heads and adapted to establish communication between the respective interiors thereof, flues 8 contained within said tubes 9 and also connected with said heads, and the circulating-tube 45 connecting the said chambers 4 and 5 and lying wholly within the combustion-chamber of the furnace, the respective chambers 4 and 5 communicating with the like chambers of the adjoining units or members, and the said heads alternating in height at each side of the boiler.

2. The combination with the combustionchamber of a furnace, of a sectional boiler consisting of a plurality of units or members, each of the latter consisting of the upper and lower chambers 4 and 5, provided with the lateral openings adapted to register with the corresponding openings of the adjacent sections, and the hollow heads extending outwardly from the said chambers, the tubes 8 and 9, and a plurality of tubes 45 located within the combustion-chamber and connecting the chambers 4 and 5.

3. A steam-boiler comprising a plurality of sections each composed of an upper and lower head and series of connecting water-tubes, each head having an open transverse passage registering with the transverse passage of the corresponding head of the adjacent sections, the portions of each head on opposite sides of each transverse passage of each section being at different levels,substantially as described.

4. A steam-boiler comprising a plurality of sections each com posed of an upper and lower head and series of connecting water-tubes, each head having an open transverse passage registering with the transverse passages of the corresponding heads of the adjacent sections, the corresponding portions of the heads of successive sections being at different levels, substantially as described.

In testimony whereofI afiix mysignaturein presence of two witnesses.

EUGENE H. TAYLOR.

Witnesses:

WM. A. MAoLnoD. ALICE H. MoRRIsoN. 

